Very nice logo. The way you stylized the border into a Victorian style motif is impressive. If Quantum were my company, it's probably not the direction I would have wanted to go with my branding, but that's just me. When I think "Quantum" I can't help but think purely modern and tech and that's probably more the direction I would have gone. However, considering what you were trying to accomplish, you really cranked this one out of the ballpark. I honestly don't think anyone could have pulled it off better.